Wondrous Item, artifact (requires attunement)
Aether is the material that fills the region of the universe above the terrestrial sphere. The concept of aether was used in several theories to explain several natural phenomena, such as the traveling of light and gravity. This cloak has been impossibly sown from this material.
With a reaction you may absorb half the damage from a spell or ability that does Elemental, Force, Psychic, Radiant, or Necrotic, into the Aether. You may use this ability a number of times equal to your Proficiency. You regain the charges after a long rest.